n. uranothorite
misc. brggerite
西方公司打算扩大中国以外的稀土矿产量，但这其中储量较大的稀土矿比中国华南的稀土矿复杂的多，这些矿往往伴生着放射性的铀和钍，开采起来很复杂。
Companies want to expand production outside China, but most rare-earth deposits, unlike those in southern China, are accompanied by radioactive uranium and thorium that complicate mining.
第三十八条铀(钍)矿开发利用单位应当制定铀(钍)矿退役计划。
Article 38 Any unit that exploits uranium (thorium) mine shall draw up plans for decommissioning of uranium (thorium) mines.
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